Portable heater



June 12, 1923.

C. M. JOHNSON ET AL PORTABLE HEATER Filed Nov. 2, 1922 2 Sheets-Sheet 1 E. JUNE/$125010 Q June 12, 1923, 1,458,656

C. M. JOHNSON ET AL PORTABLE HEATER 6:77 fi a 50/0 W24; EZM. Jairzsaza Patented June 12, 1923,

UNITED T ATE PATENTOFFICE;

I CHARLES MELVIN JOHNSON AND :E MELVIN'JOHNSON, OF SACRAMENTO, CALIFORNIA.

PORTABLE HEATER. v

Application filed November 2, 1922. Serial No. 598,549.

T 0 all whom it may concern; I

Be it known that we, CHA L S M. JoHN- soN and E MELVIN JOHNSO citizens of the United States, and residentsof Sacramento, in the county of Sacramento and the State of California, have invented certain new and useful Improvements in Portable Heaters, of which thefollowing is a specification,

This invention relates to a gas stove designed for heating purposes and which may be located at any desired point. While the device is portable it is so only in the sense that it is not affixed to any permanent foundation as is customary with a furnace, and

it may be moved from one room to another or from one house to another. It is however connected'to an exterior flue and in such respect is stationary.

The main object of the invention is to heat the air, and the room by means of radiated heat, the air in the room passing through flues in the stove, extracting heat from the walls of said flues and then being passed into the room without entering into the combustion chamber or being in any Way mingled with products of combustion. The invention consists especially of the novel arrangement of such flues and their location so that they are surrounded on all sides with the products of combustion and air in contact therewith, such products and heated air being passed off through a vent after giving up the maximum amount of their heat units.

In the accompanying drawings:

Figure 1 is a front elevation of the heater.

Figure 2 is a vertical section.

Figure 3 is a vertical section on the line 3-3 of Fig. 1 and at right angles to Figure 2.

Figure 4 is a cross section on the line 4- 1 Fig. 2 immediately belowthe top.

Figure 5 is a top plan View.

In the drawings 1 designates an outer casing with perpendicular walls and rounded corners. At the front it has a door 2, at the rear a vent pipe 3, which is to be connected to any suitable chimney flue in the usual manner.

Supporting legs 4 lift the heater above the floor. A gas burner 5 supplied by a pipe 6 is mounted in the lower portion of the heater. A top member 7 is provided with two elongated openings as at 8.

Arranged within the casing 1 are two hot air flues 9. Each flue is formed of three sections A, B and C. The sections A are vertical, are placed on opposite sides of the burner, but are spaced from he sidewalls of the outer casing 1. On their inner sides these flues extend downwardlyv forming a part of the foot portions 4. This not only givesthe flues a support on the floor but. also forms for each flue a wall separating the air entering the flue from the air currents .(lrawn'into thefcombustion chamber, there-.

by giving a stronger draft into said flues. It also prevents any downdraft fromrthe combustion chamber which would permit fumes from the burner mingling with the freshair. i I

. I The flues C are close together, also vertical, and are above the burner and central with respect to the combustion chamber. Their cross sectional area is less than the flues A. Flues A and C are connected by obliquely arranged flues B which consequently overhang the burner 5. Products of combustion and heated air from the burner entirely surround these flues 9. At their upper ends the sections C align with 30 the openings 8, which may be provided with suitable grids of any desired design. Arranged in the upper portion of the casing is a truncated conical partition 10 which extends from the top 7 to the sides of the cas- 35 ing 1 and surrounds the flue sections C and portions of the sections B. Near its top it is provided with openings 11. This partition divides the interior of the heater into a combustion chamber D which occupies the entire central portion of the casing and within which are the flues 9, and an outer, upper compartment E which communicates with the combustion chamber D through the openings 11 and with the chimney through the vent 3, and it will be noted that this vent is below the openings 11.

The casing 1 is open at the bottom, provision of'course being made for supporting the burner, as by a spider, with suitable flange to support the outer walls of the sections A. Any form of burner or pipe connection can be used.

In operation the products of combustion circle around the flues 9, pass through the openings '11 into compartment E encircle the partition 10 and then are exhausted through the vent pipe 3.

Most of the heat units are extracted before the air is vented and owing to the arrange- 1 ment of the cone 10 the heat is confined to the inner portion of the device and the walls of combustion, a vent for products of com-- bustion, a perforated conical partition surrounding the upper portion of the flues and between the burner and the vent, and a top for the heater having openings registering with said flues. l

2'. A heater comprising an outer casing, a combustion chamber, a burner therein, fines extending upwardly and inwardly through said combustion chamber and discharging through the top ofthe casing, a truncated conical partition carried respectively by the top and sides of the casing and surrounding the upper portions of the fines, said partition being perforated, supporting legs for the casing, the inner walls of the flues extending downwardly and'fformin'g a portion of said supporting legs, and a vent for products of combustion said vent communicating with the space between the casing and said partition.

A- gas heater having a combustion chamber, a burner therein, fines extending upwardly through said combustion chamber and spaced from the walls of the chamber, said fines comprising lower vertical portions, upper vertical portionsofiset with respect to the lower portions, and inwardly and upwardly angled portions connecting the lower and upper portions, a vent for the combustion chamber, and a partition arranged between the vent and burner and adapted to concentrate the products of combustion about the upper portions of the fines and to force same to travel in a downward direction to reach the vent, as and for the purpose set forth. w

In testimony whereof we aflix our signatures.

CHARLES MELVIN JOHNSON.

E MELVIN JOHNSON. 

